I recently configured a Nagios server on CentOS 6.5.
I addition, I configured NagioSQL to make its management easier.
Now, I need to configure ndo2db (damned leaders!) and my boss decided he wanted ...

I recently started to use Nagios to monitor about 25 servers (mainly virtual, with some standalone). Them majority of the servers (including the Nagios host itself) are running Ubuntu 14.04 LTS, with ...

Am monitoring ~100 remote hosts via a VPN using check_snmp_process.pl. For many months this has worked just fine. Over the weekend I started seeing ERROR: Alarm signal (Nagios time-out) errors from ...

I'm trying to configure Nagios command for checking status of physical memory on a remote Windows host using NRPE plugin. I'm using Nagios v3.0.6 on Ubuntu Server v14.10, and latest stable version of ...

I'm trying to configure my Nagios setup to automatically log a ticket in our ticketing system when a host goes down (PING service goes into a HARD CRITICAL state). I've got a script that will create ...

I have numerous windows clients that I want to monitor via nagios/nsclient. I've installed the latest nsclient on two win7 x64 and one win2012 r2. Of these one win7 works while the other two machines ...

I currently just inherited Nagios administration after an employee was let go a couple of days ago. As part of our procedures for exiting employees, we changed passwords for all accounts the employee ...

I have a NAGIOS check that monitors virtual memory on a windows machine, this check returns all the virtual memory used (physical+ max size of the pagefile).
This is not what I want, I have tried to ...

I'm trying to monitor an HP Smart Array controller using nagios. I have 4 disks on 2 RAID1 arrays, so 2 disks per RAID1.
I installed nrpe-server and nrpe-plugins and I'm using the almighty check_raid ...

We're using Nagios based Op5 to monitor hosts. I've minimum requirement to check a host if it is live or not.
So I simply want to know if a host is live with max RTA of 10 seconds. I don't care how ...

I've been searching high and low for a good explanation of how I should return data from my custom Nagios plugin to make sure that Nagiosgraph will be able to parse it.
One place suggests the format ...

I have a master and hot standby setup with PostgreSQL 9.3, and I'm attempting to monitor the state of replication on the standby using the check_postgres tool and the "hot_standby_delay" action. This ...

I have a Nagios 3.5.1 monitor up for a bunch of servers. In doing an action like a Drupal or Wordpress core upgrade, I down the sites and set Nagios to scheduled outage.
Sometimes I finish in under ...

First of all: I know there were already questions about this issue, but even using their answers I still cannot figure out why my command is not working.
What I want to do is call a script on remote ...

We are using Nagios based Op5 to monitors servers.
Do we need to have Ping service too for servers as I guess host_check_live (command: $USER2$/check_host -H $HOSTADDRESS$) command already uses Ping ...

In my home I run a Plex/Data server. It basically just serves everyone's files and then Plex to play movies and such. A Teamspeak server also runs on it, but nothing major other than those tasks. I ...

I have a Nagios server which monitors many servers.
There's a dashboard which has been coded in-house and it sends monitoring data using passive checks to the Nagios server.
Whenever an issue occurs, ...

In this guide I'm not focusing at all on setting up HA proxy or why you'd want to do that. If you have it and want to properly monitor it using Icinga, here's an idea of how you could go about this.
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I am running Nagios 3.5 on a Centos 7 machine. The setup is used to monitor some Windows machines via NRPE (check_nrpe commands). For the time being I am using the preconfigured 'alias' commands that ...

Looking here on the nagios docs I see that it's standard practice to pass a hostaddress macro to your commands with the -H flag.
What if your command already has a -H flag however? It's not clear to ...

I am using Nagios to monitor Windows hosts. I am using Nagios 3.5 running on a Centos 7 server. The following packages have been installed from the official repositories and from the EPEL repository:
...